Overview: 6 questions will be solved this time.Among them
☆6 equations
[ 1/6 Equation]
Work: Find the solution of equation 5x×3+3x×3-41 = 103 .
Question type: Equation
Solution:Original question:| | 5 | x | × | 3 | + | 3 | x | × | 3 | − | 41 | = | 103 |
| Left side of the equation = | 15 | x | + | 9 | x | − | 41 |
The equation is transformed into :
Transposition :
Combine the items on the right of the equation:
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
[ 2/6 Equation]
Work: Find the solution of equation 5x×3+25 = 457-3x×3 .
Question type: Equation
Solution:Original question:| | 5 | x | × | 3 | + | 25 | = | 457 | − | 3 | x | × | 3 |
| Left side of the equation = | 15 | x | + | 25 |
The equation is transformed into :
| | 15 | x | + | 25 | = | 457 | − | 3 | x | × | 3 |
| Right side of the equation = | 457 | − | 9 | x |
The equation is transformed into :
Transposition :
Combine the items on the left of the equation:
Combine the items on the right of the equation:
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
[ 3/6 Equation]
Work: Find the solution of equation 1.5(x-4) = 36 .
Question type: Equation
Solution:Original question: Remove the bracket on the left of the equation:
| Left side of the equation = | 3 2 | x | − | 3 2 | × | 4 |
The equation is transformed into :
Transposition :
Combine the items on the right of the equation:
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
[ 4/6 Equation]
Work: Find the solution of equation (x+2)×2 = x+6.5 .
Question type: Equation
Solution:Original question: Remove the bracket on the left of the equation:
| Left side of the equation = | x | × | 2 | + | 2 | × | 2 |
The equation is transformed into :
Transposition :
i.e.
Combine the items on the left of the equation:
Combine the items on the right of the equation:
This is the solution of the equation.
This is the solution of the equation.
[ 5/6 Equation]
Work: Find the solution of equation 4x+50 = 54+2x .
Question type: Equation
Solution:Original question:
Transposition :
Combine the items on the left of the equation:
Combine the items on the right of the equation:
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
[ 6/6 Equation]
Work: Find the solution of equation 2x×3+2x-26 = 134 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 6 | x | + | 2 | x | − | 26 |
The equation is transformed into :
Transposition :
Combine the items on the right of the equation:
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
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